Structural extrusion



FIG. 1 is a perspective view of the structural extrusion showing our new design;

FIG. 2 is an end view of the structural extrusion showing our new design;

FIG. 3 is a side elevation view of the structural extrusion showing our new design;

FIG. 4 is a side elevation view of the structural extrusion opposite to that shown in FIG. 3 and showing our new design;

FIG. 5 is a front elevation view of the structural extrusion showing our new design; and,

FIG. 6 is a rear elevation view of the structural extrusion showing our new design. 

The ornamental design of a structural extrusion, as shown and described. 